Condensation of fluorine-substituted benzaldehydes with amines and cyclic ketones
摘要:
Condensation of fluorine-containing benzaldehydes with naphthalen-2-amine or quinolin-6-amine and cyclic ketones (cyclopentanone, cyclohexanone, and 4-methylcyclohexanone) gave new fluorine-containing derivatives of cyclopenta[c]benzo[f]quinoline, benzo[a]phenanthridine, and cyclopenta[a]- and benzo[a]-[4,7]phenanthroline. Intermediate products, 2-[(fluorophenyl)(2-naphthylamino or quinolin-6-ylamino)methylidene] cyclohexanones, dihydrobenzo[f]quinolines, and dihydro-4,7-phenanthrolines, were isolated.
An efficient synthesis of 8-aryl-9H-cyclopenta[a][4,7]phenanthroline derivatives catalyzed by iodine
作者:Ming-Yue Yin、Mei-Mei Zhang、Wei Wang、Yu-Ling Li、Xiang-Shan Wang
DOI:10.3998/ark.5550190.0012.b05
日期:——
A series of 10,11-dihydro-8-aryl-9H-cyclopenta[a][4,7]phenanthrolinederivatives was prepared by a three-component reaction of aromatic aldehyde, quinolin-6-amine and cyclopentanone using iodine as catalyst. The structure of 4e is confirmed by X-ray diffraction analysis, and the crystal structure is discussed in detail. Compared to the previous method, this iodine-catalyzed procedure has the advantages